Cisco Systems VG224 Configuring Voice over IP, Prerequisites, Configuring the Voice Interface

C H A P T E R 4

Configuring Voice over IP

This chapter explains how to configure voice interfaces and ports, which convert telephone voice signals for transmission over an IP network.

This chapter presents the following major topics:

•Prerequisites, page 4-1

•Configuring the Voice Interface, page 4-1

•Where to Go Next, page 4-3

Voice over IP (VoIP) enables your Cisco VG224 to carry live voice traffic (for example, telephone calls and faxes) over an IP network. VoIP offers the following benefits:

•Unified voice and data trunking

•Plain old telephone service (POTS)-Internet telephony gateways

Prerequisites

Before you can configure your Cisco VG224 to use VoIP, you must first establish a working IP network.

Configuring the Voice Interface

Whenever you install a new interface, or if you want to change the configuration of an existing interface, you must configure the interface. If you replace a module that was already configured, the Cisco VG224 recognizes it and brings up the interface in the existing configuration.

Before you configure an interface, have the following information available:

•Protocols you plan to route on the new interface

•IP addresses, subnet masks, network numbers, zones, or other information related to the routing protocol

Timesaver Obtain this information from your system administrator or network plan before you begin configuring your Cisco VG224.

To configure a voice interface, you must use configuration mode (manual configuration). In this mode, you can enter Cisco IOS commands through the command line interface (CLI).

Cisco VG224 Voice Gateway Software Configuration Guide

OL-5005-01 4-1